US7154573B2 - Electro-optical device and electronic apparatus including the same - Google Patents
Electro-optical device and electronic apparatus including the same Download PDFInfo
- Publication number
- US7154573B2 US7154573B2 US10/921,104 US92110404A US7154573B2 US 7154573 B2 US7154573 B2 US 7154573B2 US 92110404 A US92110404 A US 92110404A US 7154573 B2 US7154573 B2 US 7154573B2
- Authority
- US
- United States
- Prior art keywords
- liquid
- polarizer
- crystal panel
- electro
- optical device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
Definitions
- the present invention relates to an electro-optical device holding liquid crystal as an electro-optical substance between a pair of transmissive substrates, and to an electronic apparatus including the same.
- Electro-optical devices each including a liquid-crystal panel holding twisted nematic liquid crystal (TN liquid crystal), whose molecules are twisted, between a pair of transmissive substrates, are mounted in electronic apparatuses such as direct-view displays and projection displays.
- TN liquid crystal twisted nematic liquid crystal
- a first polarizer 140 and a second polarizer 150 are bonded to the back face and the front face, respectively, of a liquid-crystal panel 100 .
- the first polarizer 140 and the second polarizer 150 are disposed in cross-Nicol arrangement.
- predetermined images can be displayed by controlling the molecular alignment of the liquid crystal in each pixel by controlling the electric field in each pixel, as is disclosed in Patent Document 1, for example.
- Patent Document 1 Japanese Unexamined Patent Application Publication No. 2003-21832.
- the first polarizer 140 and the second polarizer 150 oppose each other and are separated by the liquid-crystal panel 100 .
- a polarization axis 141 of the first polarizer 140 is orthogonal to a polarization axis 151 of the second polarizer 150 when viewed from the direction normal to the image display surface of the liquid-crystal panel 100 , namely in the direction of an arrow L 1 .
- the polarization axis 141 of the first polarizer 140 is not orthogonal to the polarization axis 151 of the second polarizer 150 when viewed from a direction oblique from the normal direction, represented as arrows L 2 and L 3 . Consequently, the liquid-crystal panel 100 disadvantageously exhibits a low contrast when viewed obliquely in the known electro-optical device.
- an object of the present invention is to provide an electro-optical device displaying high-contrast images in all directions due to the orthogonality of the polarization axes of the polarizers by improving the structure of the polarizers, and to provide an electronic apparatus including the same.
- an electro-optical device includes a liquid-crystal panel holding liquid crystal between a pair of transmissive substrates; a first polarizer disposed adjacent to the back face of the liquid-crystal panel; and a second polarizer disposed adjacent to the front face of the liquid-crystal panel in cross-Nicol arrangement together with the first polarizer. At least one of the first polarizer and the second polarizer is curved and surrounds a virtual axis line defined substantially in the center of the liquid-crystal panel.
- both the curved first polarizer and the curved second polarizer preferably surround the virtual axis line.
- both the curved first polarizer and the curved second polarizer are preferably centered on the virtual axis line.
- the first polarizer and the second polarizer are preferably composed of a single polarizing sheet surrounding the virtual axis line, adjacent to the back face and the front face, respectively, of the liquid-crystal panel.
- a seam at the ends of the polarizing sheet is preferably disposed so that a side edge of the liquid-crystal panel is aligned with the seam.
- the liquid-crystal panel is preferably disposed substantially in the center of a transparent cylindrical container surrounding the virtual axis line, and the polarizing sheet is preferably provided along the inner surface or the outer surface of the cylindrical container.
- the polarizing sheet is preferably fixed on the inner surface or the outer surface of the cylindrical container.
- the polarizing sheet is preferably provided along the inner surface of the cylindrical container.
- openings of the cylindrical container are preferably shielded by light-shielding members.
- the electro-optical device according to the present invention is applicable to electronic apparatuses such as large-format display apparatuses.
- a first polarizer and a second polarizer are disposed in cross-Nicol arrangement adjacent to the back face and the front face, respectively, of a liquid-crystal panel, and at least one of the first polarizer and the second polarizer is curved and surrounds a virtual axis line defined substantially in the center of the liquid-crystal panel.
- FIG. 1(A) is a perspective view of the structure of a liquid-crystal panel included in an electro-optical device according to the present invention, shown from above an opposing substrate.
- FIG. 1(B) is a cross-sectional view of the structure of the liquid-crystal panel.
- FIG. 2 is an equivalent circuit diagram of various elements, wiring lines and the like in a matrix of pixels in an image display area of the electro-optical device shown in FIGS. 1(A) and 1(B) .
- FIG. 3 illustrates an electro-optical device according to an embodiment of the present invention ( FIG. 3A , including a polarizing sheet according to an embodiment of the present invention ( FIG. 3B ).
- FIG. 4 illustrates the structure of an electro-optical device according to another embodiment of the present invention.
- FIG. 5(A) illustrates a known electro-optical device.
- FIG. 5(B) illustrates how the orthogonality of the polarization axes of the polarizers depends on the viewing angle.
- FIG. 1(A) is a perspective view of the structure of a liquid-crystal panel included in an electro-optical device according to the present invention, shown from above an opposing substrate.
- FIG. 1(B) is a cross-sectional view of the structure of the liquid-crystal panel.
- FIG. 2 is an equivalent circuit diagram of various elements, wiring lines and the like in a matrix of pixels in an image display area of the electro-optical device.
- the magnification scales of layers and components are varied so as to facilitate the identification of those layers and components.
- an electro-optical device 1 includes a transmissive or transflective active-matrix liquid-crystal panel 100 and a backlight (not shown).
- liquid crystal 50 serving as an electro-optical substance, is held between a thin-film-transistor-array (TFT-array) substrate 10 (transmissive substrate) and an opposing substrate 20 (transmissive substrate) that are bonded with a rectangular frame-shaped seal 52 .
- TFT-array thin-film-transistor-array
- a peripheral light-shielding member 53 composed of a light-shielding material is provided along and immediately inside of the inner side of the seal 52 .
- the TFT-array substrate 10 is larger than the opposing substrate 20 .
- a large number of terminals 14 are disposed along an edge of the TFT-array substrate 10 on an overhanging portion 12 overhanging from the opposing substrate 20 .
- a flexible substrate 120 having a driving integrated circuit (IC) 110 formed thereon by chip-on-flex (COF) technology is connected to these terminals 14 .
- IC driving integrated circuit
- COF chip-on-flex
- a data-line-driving circuit or a scanning-line-driving circuit may be formed on the TFT-array substrate 10 .
- the driving IC 110 may be formed on the TFT-array substrate 10 by chip-on-glass (COG) technology instead of COF technology.
- a matrix of pixel electrodes 9 a is formed on the TFT-array substrate 10 .
- a grid-shaped light-shielding film 23 referred to as a black matrix, a black stripe, or the like, is disposed on the opposing substrate 20 between adjacent pixel electrodes 9 a of the TFT-array substrate 10 .
- An opposing electrode 21 composed of an indium tin oxide (ITO) film is provided above the light-shielding film 23 .
- ITO indium tin oxide
- RGB color filters are provided on the opposing substrate 20 at regions corresponding to the pixel electrodes (described later) of the TFT-array substrate 10 during the formation of a surface protective film of the opposing substrate 20 .
- the polarizers or the like are disposed on the liquid-crystal panel 100 in predetermined directions according to the type of the liquid crystal 50 to be used, in other words, operational modes such as a twisted nematic (TN) mode and a super TN (STN) mode, or a normally white mode or a normally black mode.
- operational modes such as a twisted nematic (TN) mode and a super TN (STN) mode, or a normally white mode or a normally black mode.
- sheet polarizers are disposed as described below.
- a matrix of pixels 100 a is provided in the image display area of the liquid-crystal panel 100 having the above-described structure.
- Each of the pixels 100 a has one pixel electrode 9 a , and one pixel-switching TFT 30 (thin film semiconductor element) to drive the pixel electrode 9 a .
- Data lines 6 a for supplying pixel signals S 1 , S 2 , . . . , Sn are electrically connected to the respective sources of the TFTs 30 .
- the pixel signals S 1 , S 2 , . . . , Sn written in the data lines 6 a may be supplied line-sequentially in this order, or may be supplied to groups of two adjacent data lines 6 a .
- Scanning lines 3 a are electrically connected to the respective gates of the TFTs 30 , and pulsed scanning signals G 1 , G 2 , . . . , Gm are applied to the respective scanning lines 3 a at a predetermined timing line-sequentially in this order.
- the pixel electrodes 9 a are electrically connected to the respective drains of the TFTs 30 , and the pixel signals S 1 , S 2 , . . . , Sn supplied by the data lines 6 a are written in the respective pixels at a predetermined interval by switching on the TFTs 30 , namely switching elements, for a predetermined period.
- the liquid crystal 50 modulates light and can provide a gray scale. Since this embodiment adopts the normally white mode, the light density of the incident light passing through this liquid crystal 50 decreases with the applied voltage. As a result, light exhibiting a contrast according to the pixel signals S 1 , S 2 , . . . , Sn is emitted from the electro-optical device 1 .
- storage capacitors 60 may be added in parallel to the liquid-crystal capacitors defined between the pixel electrodes 9 a and the opposing electrode 21 .
- the voltage of the pixel electrodes 9 a is retained by the storage capacitors 60 (thin film capacitor elements) for a period that is three orders of magnitude longer than the period for which the source voltage is applied.
- the storage capacitors 60 may be connected to capacity lines 3 b , namely wiring lines for forming the storage capacitors 60 , or may be connected to the scanning lines 3 a in the upper rows.
- FIG. 3 (including FIGS. 3A and 3B ) illustrates the structure of the electro-optical device 1 of this embodiment.
- the molecules of the liquid crystal 50 shown in FIG. 1(B) are twisted by 90° between the substrates.
- the first polarizer 140 and the second polarizer 150 are disposed in cross-Nicol arrangement adjacent to the back face and the front face, respectively, of the liquid-crystal panel 100 .
- the liquid-crystal panel 100 in this embodiment is disposed substantially in the center of a transparent cylindrical container 200 that coaxially surrounds a virtual axis line L extending vertically parallel to the surface of the liquid-crystal panel 100 .
- a rectangular polarizing sheet 130 is bonded or mechanically fixed to the entire circumference of the inner surface 210 of the cylindrical container 200 . Consequently, the polarizing sheet 130 is curved and surrounds the virtual axis line L.
- a side edge of the liquid-crystal panel 100 is aligned with a seam 135 of the polarizing sheet 130 .
- the top opening 230 and the bottom opening 240 of the transparent cylindrical container 200 are sealed with light-shielding disks 280 and 290 , respectively, so that no light enters the inside of the cylindrical container 200 from the top opening 230 and the bottom opening 240 .
- a backlight 300 is disposed outside the cylindrical container 200 adjacent to the back face of the liquid-crystal panel 100 .
- the polarization axis 131 of the polarizing sheet 130 is biased from each side of the sheet.
- the polarization axis 131 is biased by an angle of 45° with respect to the long side of the polarizing sheet 130 .
- a portion of the cylindrical polarizing sheet centered on the virtual axis line L adjacent to the back face of the liquid-crystal panel 100 is defined as the first polarizer 140 and a portion of the cylindrical polarizing sheet centered on the virtual axis line L adjacent to the front face of the liquid-crystal panel 100 is defined as the second polarizer 150 .
- the first polarizer 140 and the second polarizer 150 are disposed in cross-Nicol arrangement.
- the molecules of the liquid crystal 50 are twisted, for example by 90°, between the TFT-array substrate 10 and the opposing substrate 20 shown in FIG. 1(B) . Therefore, the light emitted from the backlight 300 is polarized linearly in a predetermined direction by the first polarizer 140 and is incident on the liquid-crystal panel 100 .
- the polarization axis of the incident light is twisted by the liquid crystal 50 and the light passes through the second polarizer 150 .
- predetermined images can be displayed by controlling the electric field in each pixel.
- the first polarizer 140 and the second polarizer 150 are the portions of one cylindrical polarizing sheet 130 centered on the virtual axis line L adjacent to the back face and the front face, respectively, of the liquid-crystal panel 100 . Accordingly, the polarization axes of the first polarizer 140 and the second polarizer 150 intersect at an angle of 90° when viewed from the direction normal to the liquid-crystal panel 100 , namely in the direction of the arrow L 1 . Moreover, the polarization axis of the first polarizer 140 and the polarization axis of the second polarizer 150 also consistently intersect at an angle of 90° even when viewed from a direction oblique from the normal direction, represented as the arrows L 2 and L 3 . Consequently, images displayed in the liquid-crystal panel 100 exhibit a high contrast when viewed from all directions.
- the single polarizing sheet 130 functions as both the first polarizer 140 and the second polarizer 150 in this embodiment, the angle defined by the polarization axes of a pair of polarizers 140 and 150 is always constant and thus images exhibit a high contrast even when the liquid-crystal panel 100 is viewed from all directions.
- the seam 135 joining the ends of the polarizing sheet 130 is disposed so that the side edge of the liquid-crystal panel 100 is aligned with the seam 135 and does not hinder the display of images.
- the openings 230 and 240 of the cylindrical container 200 are shielded by the light-shielding disks 280 and 290 , light does not enter therefrom. Only the light passing through both the first polarizer 140 and the second polarizer 150 can reach the viewers' eyes. Consequently, images can be displayed in an optimal state.
- the polarizers 140 and 150 may be provided along the outer surface of the cylindrical container 200 . However, the polarizers 140 and 150 in this embodiment are provided along the inner surface 210 to prevent light from penetrating or leaking through the cylindrical container 200 .
- the polarizing sheet 130 is fixed on the cylindrical container 200 and is not bonded to the liquid-crystal panel 100 in this embodiment. Since the polarizing sheet 130 does not need to be stripped from the liquid-crystal panel 100 , many hours can be saved for reworking the electro-optical device 1 and damage to the liquid-crystal panel 100 can be avoided.
- a single polarizing sheet 130 is curved and surrounds the virtual axis line L as a centerline, and the portions of the polarizing sheet located adjacent to the back face and the front face of the liquid-crystal panel 100 are defined as the first polarizer 140 and the second polarizer 150 , respectively.
- Two curved polarizing sheets centered on a virtual axis line may be disposed adjacent to the back face and the front face of the liquid-crystal panel, and may function as a first polarizer and a second polarizer, respectively.
- both the first polarizer and the second polarizer are portions of the cylindrical polarizing sheet centered on the virtual axis line L.
- the viewing-angle range can also be improved compared to the arrangement when both the first polarizer 140 and the second polarizer 150 are parallel to the liquid-crystal panel 100 , and contrast in all directions does not change significantly.
- the second polarizer may be parallel to the liquid-crystal panel and only the first polarizer may be curved and centered on the virtual axis line L.
- an active-matrix liquid-crystal panel having TFTs as pixel-switching elements is described.
- the present invention is also applicable to electro-optical devices including an active-matrix liquid-crystal panel having thin film diodes (TFDs) as pixel-switching elements or a passive-matrix liquid-crystal panel.
- TFTs thin film diodes
- the electro-optical devices according to the present invention are not illustrated. Due to a high contrast regardless of viewing angles, the electro-optical devices are applicable to electronic apparatuses such as a large-format display apparatus on the street or in storefronts.
- a first polarizer and a second polarizer are disposed in cross-Nicol arrangement adjacent to the back face and the front face, respectively, of a liquid-crystal panel, and at least one of the first polarizer and the second polarizer is curved and surrounds a virtual axis line defined substantially in the center of the liquid-crystal panel.
- the angle defined by the polarization axes of a pair of polarizers does not change significantly even when the liquid-crystal panel is viewed obliquely compared to the arrangement when a pair of polarizers is parallel to each other, and high-contrast images can be achieved even when the liquid-crystal panel is viewed obliquely. Consequently, the electro-optical devices according to the present invention are applicable to electronic apparatuses such as large-format display apparatuses displayed on the street or in storefronts.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003369056A JP3855987B2 (en) | 2003-10-29 | 2003-10-29 | Electro-optical device and electronic apparatus using the same |
JP2003-369056 | 2003-10-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20050094058A1 US20050094058A1 (en) | 2005-05-05 |
US7154573B2 true US7154573B2 (en) | 2006-12-26 |
Family
ID=34543806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/921,104 Active 2024-10-21 US7154573B2 (en) | 2003-10-29 | 2004-08-19 | Electro-optical device and electronic apparatus including the same |
Country Status (2)
Country | Link |
---|---|
US (1) | US7154573B2 (en) |
JP (1) | JP3855987B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11294112B2 (en) | 2017-10-10 | 2022-04-05 | HKC Corporation Limited | Polarizing plate, manufacture method of the same, and curved display panel |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5628611B2 (en) * | 2010-09-16 | 2014-11-19 | 三菱電機株式会社 | Liquid crystal display |
KR102096554B1 (en) | 2013-02-28 | 2020-04-02 | 엘지디스플레이 주식회사 | Display device |
CN109960072A (en) * | 2017-12-22 | 2019-07-02 | 深超光电(深圳)有限公司 | Polaroid and the liquid crystal display device for using the polaroid |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5616111A (en) * | 1979-07-18 | 1981-02-16 | Hitachi Ltd | Liquid crystal display element |
JPS6041021A (en) * | 1983-08-17 | 1985-03-04 | Alps Electric Co Ltd | Liquid crystal display device |
JPH02101426A (en) * | 1988-10-11 | 1990-04-13 | Ricoh Co Ltd | Production of liquid crystal display element |
US5097352A (en) * | 1988-09-28 | 1992-03-17 | Olympus Optical Co., Ltd. | Optical system including liquid crystal devices |
JPH10260398A (en) * | 1997-03-18 | 1998-09-29 | Seiko Epson Corp | Liquid-crystal display panel, liquid crystal dipslay device, electronic equipment, and mounting method for liquid-crystal display panel |
JP2001318226A (en) | 2000-05-10 | 2001-11-16 | Sony Corp | Polarization optical element and optical device |
JP2003021832A (en) | 2001-07-09 | 2003-01-24 | Seiko Epson Corp | Liquid crystal device and electronic instrument |
-
2003
- 2003-10-29 JP JP2003369056A patent/JP3855987B2/en not_active Expired - Lifetime
-
2004
- 2004-08-19 US US10/921,104 patent/US7154573B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5616111A (en) * | 1979-07-18 | 1981-02-16 | Hitachi Ltd | Liquid crystal display element |
JPS6041021A (en) * | 1983-08-17 | 1985-03-04 | Alps Electric Co Ltd | Liquid crystal display device |
US5097352A (en) * | 1988-09-28 | 1992-03-17 | Olympus Optical Co., Ltd. | Optical system including liquid crystal devices |
JPH02101426A (en) * | 1988-10-11 | 1990-04-13 | Ricoh Co Ltd | Production of liquid crystal display element |
JPH10260398A (en) * | 1997-03-18 | 1998-09-29 | Seiko Epson Corp | Liquid-crystal display panel, liquid crystal dipslay device, electronic equipment, and mounting method for liquid-crystal display panel |
JP2001318226A (en) | 2000-05-10 | 2001-11-16 | Sony Corp | Polarization optical element and optical device |
JP2003021832A (en) | 2001-07-09 | 2003-01-24 | Seiko Epson Corp | Liquid crystal device and electronic instrument |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11294112B2 (en) | 2017-10-10 | 2022-04-05 | HKC Corporation Limited | Polarizing plate, manufacture method of the same, and curved display panel |
Also Published As
Publication number | Publication date |
---|---|
JP3855987B2 (en) | 2006-12-13 |
US20050094058A1 (en) | 2005-05-05 |
JP2005134545A (en) | 2005-05-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7477347B2 (en) | Liquid crystal device and electronic apparatus | |
US20070279567A1 (en) | Liquid crystal device and electronic apparatus | |
US7586575B2 (en) | Liquid crystal device and electronic apparatus | |
EP1983368A1 (en) | Liquid crystal apparatus and electronic device | |
US7796226B2 (en) | Liquid crystal display device | |
US20060197898A1 (en) | Liquid crystal device and electronic apparatus | |
JP2002162643A (en) | Common electrode substrate and liquid crystal display device provided with the same | |
US20040169797A1 (en) | Electro-optical panel and electronic equipment | |
US7663716B2 (en) | Liquid crystal display device and electronic apparatus | |
KR19990067995A (en) | Liquid crystal display device and method its production | |
KR101888516B1 (en) | Dual mode liquid crystal display device | |
US20220350183A1 (en) | Display device | |
US8094250B2 (en) | Wide viewing angle liquid crystal display with high response speed | |
US10101609B2 (en) | Pixel structure utilizing nanowire grid polarizers with multiple domain vertical alignment | |
US20080218462A1 (en) | Method for driving electro-optic device, electro-optic device, and electronic apparatus | |
US7154573B2 (en) | Electro-optical device and electronic apparatus including the same | |
US6876418B2 (en) | Liquid crystal display device having wide viewing angles and method of fabricating the same | |
KR20020022318A (en) | Liquid Crystal Display Device | |
KR20040011377A (en) | Liquid crystal display device | |
JP4905011B2 (en) | Liquid crystal device and electronic device | |
US7787083B2 (en) | Liquid crystal device and electronic apparatus | |
KR20070073171A (en) | Display substrate and liquid crystal display panel having the same | |
US7369197B2 (en) | Polarizer, panel for a liquid crystal display, and liquid crystal display, including a scattering layer | |
US20170184929A1 (en) | Liquid crystal display device | |
EP1956420A1 (en) | Liquid crystal device and electronic apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SEIKO EPSON CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:IDE, KATSUYA;REEL/FRAME:015451/0510 Effective date: 20040910 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
AS | Assignment |
Owner name: BOE TECHNOLOGY (HK) LIMITED, CHINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SEIKO EPSON CORPORATION;REEL/FRAME:037515/0050 Effective date: 20141118 Owner name: BOE TECHNOLOGY GROUP CO., LTD., CHINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOE TECHNOLOGY (HK) LIMITED;REEL/FRAME:037515/0082 Effective date: 20150214 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553) Year of fee payment: 12 |